What Is Glitter Bombing? [VIDEO]

Recently news headlines have featured political figures being "glitter bombed" at events.  So I did the hard work to find out what this means.  Yesterday, Republican Mitt Romney was "glitter bombed" at an event in Johnstown, Colorado.  See that video below.

Wikipedia says:

Glitter bombing is an emerging act of protest in the United States in which activists throw glitter on people at public events.^[1] Glitter bombers have frequently been motivated by their targets' opposition to same-sex marriage.^[2] Glitter bombing is "technically assault and battery" according to Mark R. Vernazza, a legal associate at Edwards Angell Palmer & Dodge LLP, although Vernazza also states that without proof of intent to injure, prosecution is unlikely.^[3]

Here's a video clip of the incident in Colorado.